InlineValueVariableLookup   
  constructor(range: Range, variableName: String = definedExternally, caseSensitiveLookup: Boolean = definedExternally)(source)
Creates a new InlineValueVariableLookup object.
Parameters
range
The document line where to show the inline value.
variableName 
The name of the variable to look up.
caseSensitiveLookup  
How to perform the lookup. If missing lookup is case sensitive.